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A preparation method of nano-titanium dioxide-containing tail gas-degradable pavement based on interface modification

A nano-titanium dioxide and tail gas degradation technology, which is applied in coatings, asphalt coatings, etc., can solve the problems of inability to degrade tail gas durability, waste of nano-titanium dioxide, and failure to function, and achieve good tail gas degradation effects, convenient operation, and durability Considerable effect

Active Publication Date: 2020-09-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the incorporation method is simple to operate, the nano-titanium dioxide material inside the mixture cannot receive the irradiation of ultraviolet light due to the covering effect of the mixture, so it cannot function, which causes a serious waste of nano-titanium dioxide
The coating method has a higher degradation efficiency than the blending method. At present, in most areas of my country, the nano-titanium dioxide slurry is sprayed on the asphalt pavement to degrade the exhaust gas. There is a disadvantage of directly spraying the water-based titanium dioxide slurry on the asphalt pavement, that is, titanium dioxide is easily destroyed. Passing vehicles are taken away, and the durability of degrading exhaust gas cannot be achieved

Method used

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  • A preparation method of nano-titanium dioxide-containing tail gas-degradable pavement based on interface modification
  • A preparation method of nano-titanium dioxide-containing tail gas-degradable pavement based on interface modification
  • A preparation method of nano-titanium dioxide-containing tail gas-degradable pavement based on interface modification

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Embodiment 1

[0031] A method for preparing a nano-titanium dioxide-containing tail gas degraded pavement based on interface modification in this embodiment, the specific steps are as follows:

[0032] (1) Under the conditions of temperature (20±3℃) and humidity (60±5%), take 0.5g of titanium dioxide, 1g of polystyrene, 1g of SBS modified asphalt and an appropriate amount of tetrahydrofuran to prepare a concentration of 75mg / mL Titanium dioxide coating solution;

[0033] (2) Use glue tip dropper to drop this coating solution onto clean slide glass and aggregate, then use SEM and EDX experiments to observe the distribution of titanium dioxide on the coating material;

[0034] (3) prepare a standard Marshall test piece, its design porosity is 4.4%, and the amount of asphalt is 6.1%;

[0035] (4) In a highly humid environment, use a sprayer to evenly spray the titanium dioxide coating solution on the surface of the standard Marshall test piece. PCM2, L-PCM3.

[0036] Microstructure scanning...

Embodiment 2

[0038] A method for preparing a nano-titanium dioxide-containing tail gas degraded pavement based on interface modification in this embodiment, the specific steps are as follows:

[0039] (1) Under the conditions of temperature (20±3℃) and humidity (60±5%), take 0.4g of titanium dioxide, 0.2g of polystyrene, 0.2g of SBS modified asphalt and appropriate amount of tetrahydrofuran to prepare a concentration of 120mg / mL of titanium dioxide coating solution;

[0040] (2) Use glue tip dropper to drop this coating solution onto clean slide glass and aggregate, then use SEM and EDX experiments to observe the distribution of titanium dioxide on the coating material;

[0041] (3) prepare a standard Marshall test piece, its design porosity is 4.4%, and the amount of asphalt is 6.1%;

[0042] (4) In a highly humid environment, use a sprayer to evenly spray the water-based titanium dioxide coating solution on the surface of the standard Marshall test piece. The amount of each test piece ...

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Abstract

The invention belongs to the technical field of road engineering and discloses a preparation method of an interface modification based tail gas degradation pavement containing nano titanium dioxide. The preparation method comprises the following steps: adding an asphalt mixture, polystyrene and titanium dioxide into tetrahydrofuran, and dissolving and dispersing uniformly to obtain a coating solution for later use; uniformly spraying the coating solution on the asphalt pavement, wherein a tail gas degradation pavement can be obtained after tetrahydrofuran is totally volatilized. The interfacemodification based tail gas degradation pavement containing nano titanium dioxide provided by the invention has the advantages of good tail gas degradation effect in early stage and relatively considerable durability.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and in particular relates to a method for preparing an interface-modified tail gas-degradable pavement containing nano-titanium dioxide. Background technique [0002] At present, the car ownership is showing a rapid growth trend. Automobiles bring convenience to people's travel, but the tail gas emitted by them is the main component of air pollution. In foggy weather, the pollution caused by gasoline accounts for the main part. In order to solve this problem, all countries in the world have accelerated the research work on automobile exhaust purification technology, and issued various mandatory exhaust emission standards control regulations. At present, the measures to solve exhaust pollution in the world mainly include: administrative compulsory measures (odd and even number travel), exhaust gas internal purification measures (new fuels), exhaust gas external purification measures (th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D125/06C09D195/00C09D153/02C09D7/61
CPCC08K2003/2241C08K2201/011C08L2205/03C09D7/61C09D125/06C09D195/00C08L95/00C08L53/02C08K3/22
Inventor 于华洋虞将苗郭秀林王端宜陈扬文
Owner SOUTH CHINA UNIV OF TECH
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